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Impurities

SynThink is a trusted producer and supplier of Pharmaceutical Reference Standards, including Impurity Standards. These materials are essential for pharmaceutical companies conducting research into the quality, stability, and biological safety of drug products. We maintain a robust inventory of API impurities, ready to support your development and regulatory needs.

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Colesevelam, Impurities

Colesevelam Hexamethonium Bromide Impurity

$70.00 25 mg

In Stock

CAS No.

: 55-97-0

Mol F.

: 362.19

Mol W.

: 362.19

Cat No.

: SA10216

Hydrocortisone Valerate, Impurities

Cortisone 17-Valerate

Please enquire for price & pack size

In Stock

CAS No.

: 136370-31-5

Mol F.

: C26H36O6

Mol W.

: 444.56

Cat No.

: SA27302

Cortisone Acetate, Impurities

Cortisone 21-acetate

$95.00 25 mg

In Stock

CAS No.

: 50-04-4

Mol F.

: C23H30O6

Mol W.

: 402.48

Cat No.

: SA43205

Hydrocortisone Valerate, Impurities

Cortisone 21-Valerate

Please enquire for price & pack size

In Stock

CAS No.

: 119698-10-1

Mol F.

: C26H36O6

Mol W.

: 444.56

Cat No.

: SA27301

Hydrocortisone, Impurities

Cortisone hemisuccinate

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C25H34O8

Mol W.

: 462.53

Cat No.

: SA15219

Crisaborole, Impurities

Crisaborole

Please enquire for price & pack size

In Stock

CAS No.

: 906673-24-3

Mol F.

: C14H10BNO3

Mol W.

: 251.05

Cat No.

: SA49600

Cyclobenzaprine, Impurities

Cyclobenzaprine N-Oxide

$150.00 25 mg

In Stock

CAS No.

: 6682-26-4

Mol F.

: C20H21NO

Mol W.

: 291.39

Cat No.

: SA23105

Impurities, Molnupiravir

Cytidine ester

Please enquire for price & pack size

In Stock

CAS No.

: 886538-46-1

Mol F.

: C13H19N3O6

Mol W.

: 313.31

Cat No.

: SA46206

Impurities, Tenofovir

D-Alanine

Please enquire for price & pack size

In Stock

CAS No.

: 338-69-2

Mol F.

: C3H7NO2

Mol W.

: 89.09

Cat No.

: SA36932

Empagliflozin, Impurities

D-Glucono-1,4-lactone

Please enquire for price & pack size

In Stock

CAS No.

: 1198-69-2

Mol F.

: C6H10O6

Mol W.

: 178.1

Cat No.

: SA15140

Budesonide, Impurities

D-Home-BD-06; impurity 4

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C21H28O6

Mol W.

: 376.44

Cat No.

: SA14133

Dacarbazine, Impurities

Dacarbazine EP Impurity A

Please enquire for price & pack size

In Stock

CAS No.

: 1797817-35-6

Mol F.

: C4H3N5O

Mol W.

: 137.1

Cat No.

: SA38801

Dacarbazine, Impurities

Dacarbazine Lactose Adduct

Please enquire for price & pack size

In Stock

CAS No.

: NA

Mol F.

: C16H26N4O11

Mol W.

: 450.4

Cat No.

: SA38805

Dapagliflozin, Impurities

Dapagliflozin 1-Bromo-2-Chlorobenzene Impurity

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C15H14BrClO

Mol W.

: 325.63

Cat No.

: SA15076

Dapagliflozin, Impurities

Dapagliflozin 1-Bromo, 4-Chlorobenzene Impurity | CAS : 1629862-21-0

Please enquire for price & pack size

In Stock

CAS No.

: 1629862-21-0

Mol F.

: C15H14BrClO

Mol W.

: 325.63

Cat No.

: SA15074

Dapagliflozin, Impurities

Dapagliflozin 1,4- Anhydro impurity; Dapagliflozin Beta furanose S3B

$385.00 25 mg

In Stock

CAS No.

: 1469910-70-0

Mol F.

: C21H25ClO6

Mol W.

: 408.87

Cat No.

: SA15023

Dapagliflozin, Impurities

Dapagliflozin 2-Bromo, 1-Chlorobenzene Impurity

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C15H14BrClO

Mol W.

: 325.63

Cat No.

: SA15075

Dapagliflozin, Impurities

Dapagliflozin 4-Acetyl imurity

$210.00 10 mg

In Stock

CAS No.

Mol F.

: C23H27ClO7

Mol W.

: 450.91

Cat No.

: SA15047

Dapagliflozin, Impurities

Dapagliflozin 4-bromo-2-chlorobenzene Impurity | CAS : 2454263-77-3

Please enquire for price & pack size

In Stock

CAS No.

: 2454263-77-3

Mol F.

: C15H14BrClO

Mol W.

: 325.63

Cat No.

: SA15077

Dapagliflozin, Impurities

Dapagliflozin 6-Methoxy Triacetate Impurity

$195.00 25 mg

In Stock

CAS No.

Mol F.

: C28H33ClO9

Mol W.

: 549.01

Cat No.

: SA15035

Dapagliflozin, Impurities

Dapagliflozin Alpha Furanose Isomer

Please enquire for price & pack size

In Stock

CAS No.

: 1469910-83-5

Mol F.

: C21H25ClO6

Mol W.

: 408.87

Cat No.

: SA15031

Dapagliflozin, Impurities

Dapagliflozin Bromo Keto impurity (2-ethoxy)

$258.00 25 mg

In Stock

CAS No.

: 1404477-10-6

Mol F.

: C15H12BrClO2

Mol W.

: 339.62

Cat No.

: SA15006

Dapagliflozin, Impurities

Dapagliflozin C-2 Epimer

Please enquire for price & pack size

In Stock

CAS No.

: 2133407-75-5

Mol F.

: C21H25ClO6

Mol W.

: 408.87

Cat No.

: SA15024

Dapagliflozin, Impurities

Dapagliflozin Des-Ethoxy Impurity

Please enquire for price & pack size

In Stock

CAS No.

: 1185339-44-9

Mol F.

: C19H21ClO5

Mol W.

: 364.82

Cat No.

: SA15071

Dapagliflozin, Impurities

Dapagliflozin Deschloro Impurity

$256.00 50 mg

In Stock

CAS No.

: 2444702-80-9

Mol F.

: C21H26O6

Mol W.

: 374.43

Cat No.

: SA15014

Dapagliflozin, Impurities

Dapagliflozin enantiomer

$325.00 5 mg

In Stock

CAS No.

Mol F.

: C21H25ClO6

Mol W.

: 408.87

Cat No.

: SA15027

Dapagliflozin, Impurities

Dapagliflozin Hydroxy (Benzylic) Impurity

$215.00 5 mg

In Stock

CAS No.

: 1204222-85-4

Mol F.

: C21H25ClO7

Mol W.

: 424.87

Cat No.

: SA15012

Dapagliflozin, Impurities

Dapagliflozin impurity C; 1α-Methoxy Dapagliflozin, 1α-O-Methyl Dapagliflozin

$169.00 25 mg

In Stock

CAS No.

: 714269-57-5; 461432-24-6

Mol F.

: C22H27ClO7

Mol W.

: 438.9

Cat No.

: SA15010

Dapagliflozin, Impurities

Dapagliflozin Impurity D; Dapagliflozin alfa-Isomer; 1R-Dapagliflozin

Please enquire for price & pack size

In Stock

CAS No.

: 1373321-04-0

Mol F.

: C21H25ClO6

Mol W.

: 408.87

Cat No.

: SA15008

Dapagliflozin, Impurities

Dapagliflozin Keto Impurity

$239.00 10 mg

In Stock

CAS No.

: 2169998-23-4

Mol F.

: C21H23ClO7

Mol W.

: 422.86

Cat No.

: SA15011

Dapagliflozin, Impurities

Dapagliflozin Methoxy Impurity

$195.00 25 mg

In Stock

CAS No.

: 333359-90-3

Mol F.

: C20H23ClO6

Mol W.

: 394.85

Cat No.

: SA15054

Dapagliflozin, Impurities

Dapagliflozin Methoxy Tetraacetate Impurity

$298.00 25 mg

In Stock

CAS No.

: 872980-38-6

Mol F.

: C28H31ClO10

Mol W.

: 562.99

Cat No.

: SA15053

Dapagliflozin, Impurities

Dapagliflozin MonoAcetyl Impurity, Dapagliflozin Acetyl Impurity

$175.00 25 mg

In Stock

CAS No.

: 1632287-34-3

Mol F.

: C23H27ClO7

Mol W.

: 450.91

Cat No.

: SA15028

Dapagliflozin, Impurities

Dapagliflozin Nosyl Impurity

$185.00 10 mg

In Stock

CAS No.

Mol F.

: C33H32ClNO14S

Mol W.

: 734.12

Cat No.

: SA15052

Dapagliflozin, Impurities

Dapagliflozin open sugar impurity

Please enquire for price & pack size

In Stock

CAS No.

: 2100872-88-4

Mol F.

: C21H27ClO7

Mol W.

: 426.89

Cat No.

: SA15005

Dapagliflozin, Impurities

Dapagliflozin Related Compound A – USP; Dapagliflozin Bromolactone impurity

$240.00 10 mg

In Stock

CAS No.

: 1807632-95-6

Mol F.

: C21H25BrO6

Mol W.

: 453.32

Cat No.

: SA15003

Dapagliflozin, Impurities

Dapagliflozin Tetraacetate

$147.00 25 mg

In Stock

CAS No.

: 461432-25-7

Mol F.

: C29H33ClO10

Mol W.

: 577.02

Cat No.

: SA15015

Dapagliflozin, Impurities

Dapagliflozin TNG; α-D-Glucopyranoside

$225.00 10 mg

In Stock

CAS No.

: 714269-58-6

Mol F.

: C30H35ClO11

Mol W.

: 607.05

Cat No.

: SA15033

Dapagliflozin, Impurities

Dapagliflozin Tri acetate

$348.00 25 mg

In Stock

CAS No.

: 1415905-91-7

Mol F.

: C27H31ClO9

Mol W.

: 534.98

Cat No.

: SA15029

Dapagliflozin, Impurities

Dapagliflozin Triacetate Impurity

$170.00 10 mg

In Stock

CAS No.

: 1443341-94-3

Mol F.

: C27H31ClO9

Mol W.

: 535

Cat No.

: SA15050

Darunavir, Impurities

Darunavir Diamino (2R,3R) Isomer

Please enquire for price & pack size

In Stock

CAS No.

: NA

Mol F.

: C20H29N3O3S

Mol W.

: 391.53

Cat No.

: SA39409

Darunavir, Impurities

Darunavir Diamino (2S,3S) Isomer

Please enquire for price & pack size

In Stock

CAS No.

: 192800-79-6

Mol F.

: C20H29N3O3S

Mol W.

: 391.53

Cat No.

: SA39408

Clarithromycin, Impurities

De(cladinosyl) Clarithromycin

Please enquire for price & pack size

In Stock

CAS No.

: 118058-74-5

Mol F.

: C30H55NO10

Mol W.

: 589.76

Cat No.

: SA17204

Impurities, Linezolid

Deacetamide Linezolid Azide

Please enquire for price & pack size

In Stock

CAS No.

: 168828-84-0

Mol F.

: C₁₄H₁₆FN₅O₃

Mol W.

: 321.31

Cat No.

: SA17514

Impurities, Linezolid

Deacetamide Linezolid Phthalimide

Please enquire for price & pack size

In Stock

CAS No.

: 168828-89-5

Mol F.

: C₂₂H₂₀FN₃O₅

Mol W.

: 425.41

Cat No.

: SA17513

Diltiazem, Impurities

Deacetyl Diltiazem N-Oxide

$255.00 25 mg

In Stock

CAS No.

: 122619-90-3

Mol F.

: C20H24N2O4S

Mol W.

: 388.48

Cat No.

: SA19514

Impurities, Linezolid

Deacetyl Linezolid

Please enquire for price & pack size

In Stock

CAS No.

: 168828-90-8

Mol F.

: C₁₄H₁₈FN₃O₃

Mol W.

: 295.31

Cat No.

: SA17511

Diltiazem, Impurities

Deacetyl-O-demethyl Diltiazem

$295.00 25 mg

In Stock

CAS No.

: 142926-10-1 (HBr); 84903-82-2

Mol F.

: C19H22N2O3S

Mol W.

: 358.46

Cat No.

: SA19513

Impurities, Telmisartan

Debenzoic Acid Bromotelmisartan

Please enquire for price & pack size

In Stock

CAS No.

: 1004548-55-3

Mol F.

: C₂₆H₂₅BrN₄

Mol W.

: 473.41

Cat No.

: SA33919

Impurities, Lorcaserin

Dechloro rec-Lorcaserin

Please enquire for price & pack size

In Stock

CAS No.

: NA

Mol F.

: C11H16ClN

Mol W.

: 197.7

Cat No.

: SA18800